/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Package logger for printing go runtime logger
package logger

import (
	"fmt"
	"sync"

	"yuanrong.org/kernel/runtime/libruntime/api"
	"yuanrong.org/kernel/runtime/libruntime/common/logger/log"
)

var (
	once      sync.Once
	zapLogger api.FormatLogger
)

const (
	logName = "faas-executor"
)

// InitLogger -
func InitLogger() error {
	runLog, err := log.InitRunLog(logName, true)
	if err != nil {
		return fmt.Errorf("failed to init faas log, err:%s", err.Error())
	}
	SetupLogger(runLog)
	return nil
}

// SetupLogger to new a logger handler
func SetupLogger(formatLogger api.FormatLogger) {
	if formatLogger == nil {
		_ = InitLogger()
		return
	}
	zapLogger = formatLogger
}

// GetLogger get logger directly
func GetLogger() api.FormatLogger {
	if zapLogger == nil {
		once.Do(func() {
			zapLogger = log.NewConsoleLogger()
		})
	}
	return zapLogger
}
